A 500-word expository essay describing a frog

Introduction: Spring is here, and frogs begin to sing "croak" again. The following is a 500-word explanatory essay describing frogs. Welcome to refer to it. Chapter 1: A 500-word expository essay describing a frog

With a triangular head, a big white belly, a green coat, and bulging eyes, who is it? Everyone knows it is a frog. I've had a few encounters with frogs, but I didn't know it was a beneficial insect until my mother told me.

When I was a child, my mother told me that frogs could swim in the water, walk on the shore, and jump constantly. My mother also told me that a frog has only three parts, no neck or tail, and its forelimbs are shorter than its hind legs. I was very curious and thought frogs were very strange. I wanted to catch one and keep it at home for observation.

So, my friend and I secretly went to catch frogs together. When we came to the field, we only heard the sound of "croak", but we didn't see a big frog. At this time, I saw a little frog squatting in a ditch motionless, as if he had something on his mind, and seemed to be admiring the scenery. I couldn't help but call my friend over: "Hey, there's a little frog hiding here!" After that, I quickly ran over to catch it. Unexpectedly, the little frog jumped away all of a sudden, and we quickly chased after it. The little frog finally couldn't run away from us and was caught by us. When I got home, I kept it in a small pond outside the house.

Just as my little frog was swimming desperately in the small pond, my mother came back. She saw me holding a branch to chase the little frog away, and she quickly stopped her: "You can't treat a frog like this, frog." It is the natural enemy of pests. Whether it is flying bugs, bugs hiding in the ground, or bugs hiding in leaves, it will eat them as soon as it finds them, and it can eat hundreds of them a day. Bugs. They are good friends of our crops..." Her face turned cloudy again, "Let the frog go!"

Later, the little frog returned to the field with the help of my mother and I. Jumped away. From then on, the frog and I became good friends, and I never caught frogs again. Chapter 2: A 500-word expository essay about frogs

This afternoon, when I got home, I found frogs everywhere outside. I found a place with many frogs, and I stared at a little frog. The frog was there. It didn't move, as if it was observing something. I stretched out my hand to catch it. Unexpectedly, it escaped from me with lightning speed and jumped to a place one meter away. I couldn't let it escape this time. With the palm of my hand, I judged where it was going to jump, walked gently to it, and quickly reached out to catch it. It kept dancing in my hands.

This is a small frog with a dark green body, and some neatly arranged markings on its body. Its two eyes are constantly turning. It is really a smart little frog.

I put the little frog in a big basin, filled it with water, and it kept swimming in it. I finally know what breaststroke is, which is how a frog swims. Sometimes the little frog wanted to jump out and kept jumping. Occasionally it jumped out a few times, but I still caught it.

Suddenly a buzzing sound came to my ears. It turned out to be a mosquito. Since it rushed in front of the frog for no good reason, it didn't know that the green thing in front of it was its natural enemy. . When the mosquito and the frog get closer, in an instant, the frog stretches out its long tongue and rolls the mosquito into its mouth, making it a delicious meal. After a while, it screamed "croak" in the basin. Its big mouth bulged and shrank. It turned out that this is how frogs croaked. It was really strange.

I know that a frog can catch at least 10,000 bugs in a year. I put it back in the farmland, let it catch insects for the crops, and let it show its talents in the free world. Chapter 3: A 500-word expository essay about frogs

This morning, my grandma took me to buy vegetables. As soon as I entered the vegetable market, I found many people gathered around the market. I curiously went over to take a look. Unexpectedly, I didn't know it, but I was shocked when I saw it. It turned out to be a young man selling frogs. I saw the young man catch a frog from a snakeskin bag. The frog struggled desperately in the young man's hands. The young man took out a sharp knife and slashed the frog's belly, and then reached out and took out the frog's belly. The internal organs and the "green coat" of the frog were peeled off. The frog screamed miserably and then died. I was horrified to see it and felt very sad for those frogs.

The frog is an expert at catching pests. It is a small animal that is beneficial to crops. The color of its body matches the color of the grass, which makes it easier for it to use camouflage to catch prey. Its tongue is long. Covered with mucus, as long as a small insect flies by, it will jump up suddenly, open its mouth, and quickly stick out its long tongue to catch and eat the insect. The frog eats an average of 70 Multiple pests can eat more than 10,000 pests in a year. What a huge number! Just imagine, if there are no frogs to protect the crops, pests will multiply in large numbers, and the crops will suffer. The last victim will be us humans. .

Frogs are also singers. Every summer night, as long as one frog crows happily, dozens or even hundreds of frogs will respond, listening to the cheerful "croaking" sound. "It's like a beautiful symphony that accompanies me to sleep.

However, with the deliberate and unconscious destruction by humans, the number of frogs is decreasing year by year, so protecting frogs is the responsibility of each of us. Let’s take action to prevent frogs from being put on the table and promote frogs as friends of mankind. Don't let frogs disappear from the earth, keep the lovely life.